USPTO trademark record

Q III

Dead mark · Owner Dryden Engineering Co., Inc. · Classes 9

Mark details

Owner: Dryden Engineering Co., Inc.
Serial number: 74429761
Registration number: 1845455
Status: CANCELLED - SECTION 8 (dead)
Classes: 9 (Software / electronics / downloadable media)
Filed: 1993-08-30
Registered: 1994-07-19
Goods / services: surface particle detector used to test any flat surface for particulate contamination to verify cleaning, janitorial procedures and cleaning materials

Register data as of 2026-11-08. Records can trail live filings — check the official USPTO search for the latest status before filing.

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